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Hello World!

+ + + + + + Document + + +

Pig Latin Translator

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- + + + \ No newline at end of file diff --git a/main.js b/main.js index 282f4c93..542b4b19 100644 --- a/main.js +++ b/main.js @@ -1,71 +1,57 @@ +// declares JavaScript's "strict" mode. it enforces stricter parsing and error handling during runtime. helps write cleaner code and catch more errors and bugs that might otherwise go unnoticed. 'use strict'; -// brings in the assert module for unit testing -const assert = require('assert'); -// brings in the readline module to access the command line +//sets up readline module module and creates an interface to read input from the console, and to write output on the console. +//inport the 'readline' module to read input from the console const readline = require('readline'); -// use the readline module to print out to the command line +//creates an interface for reading input. It tells it where to get its input data from, and where to write it's output const rl = readline.createInterface({ input: process.stdin, output: process.stdout }); - +//named variable that hold a finction to translate word to pigLatin const pigLatin = (word) => { +//trims and converts words to lowercase + let inputWord = word.trim().toLowerCase(); + //checks if work is empty + if (inputWord.length === 0) { + //asks user to enter a valid input + return "Please enter a valid word."; + } + + //checks if the word starts with a vowel by calling th 'isVowel' helper function + if (isVowel(inputWord[0])) { + //if it does it appends "yay" to the word and returns the translated word. + return inputWord + "yay"; + } else { // if it doesnt, this function extracts the first character and moves it to the end of the word, followed by "ay". This forms the translated word + //the value of the named variable takes the first character and moves it to the end of the word. + let firstCharacter = inputWord.slice(0, 1); + //this variable holds the rest of the word + let restOfWord = inputWord.slice(1); + //returns translated word + return restOfWord + firstCharacter + "ay"; + } +}; + +//helper function to check if a letter is a vowel to check if word starts with a vowel +const isVowel = (letter) => { + // assigning the vowels to a variable. this tells the console what vowels are + const vowels = ['a', 'e', 'i', 'o', 'u']; + //this returns the character if it is a vowel when the function is running it's check + return vowels.includes(letter); +}; + + + +//prompts the user to enter a word +//calls our bucket 'rl' which holds our readline variable +rl.question('Enter a word: ', (answer) => { + //translates the word to pig latin by calling the 'pigLatin' fuction + const translation = pigLatin(answer); + //displays the translation + console.log(`Translation: ${translation}`); + // closes the readline interface + rl.close(); +}); - // Your code here - -} - -// the first function called in the program to get an input from the user -// to run the function use the command: node main.js -// to close it ctrl + C -const getPrompt = () => { - rl.question('word ', (answer) => { - console.log( pigLatin(answer) ); - getPrompt(); - }); -} - -// Unit Tests -// to use them run the command: npm test main.js -// to close them ctrl + C -if (typeof describe === 'function') { - - describe('#pigLatin()', () => { - it('should translate a simple word', () => { - assert.equal(pigLatin('car'), 'arcay'); - assert.equal(pigLatin('dog'), 'ogday'); - }); - it('should translate a complex word', () => { - assert.equal(pigLatin('create'), 'eatecray'); - assert.equal(pigLatin('valley'), 'alleyvay'); - }); - it('should attach "yay" if word begins with vowel', () => { - assert.equal(pigLatin('egg'), 'eggyay'); - assert.equal(pigLatin('emission'), 'emissionyay'); - }); - it('should lowercase and trim word before translation', () => { - assert.equal(pigLatin('HeLlO '), 'ellohay'); - assert.equal(pigLatin(' RoCkEt'), 'ocketray'); - }); - }); -} else { - - getPrompt(); - -} - - - - - - -// ********** -// HINTS -// ********** - -// break your code into pieces and focus on one piece at a time... -// 1. if word begins with a vowel send to one function: adds "yay" -// 2. if word begins with a consonant send to another function: splices off beginning, returns word with new ending. -// 3. if multiple words, create array of words, loop over them, sending them to different functions and creating a new array with the new words.